kubernetes-yaml/learn/learn-kubernetes-master/kiamol/ch09/lab

Ch09 lab

Run v1 of the app:

kubectl apply -f lab/v1/

Get the URL and browse:

kubectl get svc vweb -o jsonpath='http://{.status.loadBalancer.ingress[0].*}:8090'

v1 is the blue deployment

Sample Solution

My v2 Deployment runs four Pods from the v2 image. It's a new Deployment object, not an update to the existing v1 Deployment.

My Service update changes the label selector in the existing service to point to the Pods in the v2 Deployment.

kubectl apply -f lab/solution/

v2 is the green deployment

You can flip between blue and green by updating just the Service:

# for v1
kubectl apply -f lab/v1/vweb-service-v1.yaml

# for v2
kubectl apply -f lab/solution/vweb-service-v2.yaml

Your browser may cache the response, so be sure to do a full refresh (usually Ctrl-F5 on Windows and Cmd+Shift+R on Mac)

Teardown

Delete the lab resources by their labels:

kubectl delete all -l kiamol=ch09-lab